.body {
    background-color: #e0e0e0;
    font-family: Arial, sans-serif;
    /* background-image: url(images/背景水印2.jpg); */

}

.container {
    max-width: 1500px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    grid-row-gap: 20px;
    position: relative;
    top: 50px;
    left: 10px;

}

.video-container {
    width: 600px;
    height: 400px;
}



.h1 {
    text-align: center;
    padding: 20px;
    background-color: #333;
    color: #fff;
    border-radius: 10px;
    margin-bottom: 0;
}

.p {
    font-size: 16px;
    line-height: 1.5;
    color: #666;
}

.fa {
    font-size: 24px;
    margin-right: 10px;
}

.nav {
    background-color: #ffffff;
    padding: 10px;
    background-image: url(../images/哈工大2.jpg);
    background-repeat: no-repeat;
    border-radius: 10px;
}

.ul {
    list-style-type: none;
    margin: 0;
    padding: 15px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.li {
    font-size: 20px;
    display: inline;
    padding-right: 50px;
    font-weight: 700;
}

.item {
    margin-left: auto;
}

.a {
    text-decoration: none;
    color: #333333;
    padding: 5px;
}

a:hover {
    background-color: hsl(0, 1%, 57%);
    color: #fff;
    border-radius: 10px;
}

.feedback {
    background-color: hsl(0, 1%, 57%);
    border-radius: 10px;
}

.app-content.center-layout {
    overflow: hidden
}

html body .content .content-wrapper {
    padding: 1.8rem
}

html body .content .content-wrapper .content-header-title {
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 1px;
    color: #1b1b1b
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px
}

.col,
.col-2,
.col-4,
.col-6,
.col-8,
.col-auto,
.col-lg,
.col-lg-3,
.col-lg-4,
.col-lg-6,
.col-lg-8,
.col-lg-12,
.col-lg-auto,
.col-md,
.col-md-1,
.col-md-2,
.col-md-3,
.col-md-4,
.col-md-5,
.col-md-6,
.col-md-7,
.col-md-8,
.col-md-10,
.col-md-12,
.col-md-auto,
.col-sm,
.col-sm-2,
.col-sm-3,
.col-sm-4,
.col-sm-6,
.col-sm-8,
.col-sm-9,
.col-sm-10,
.col-sm-12,
.col-sm-auto,
.col-xl-6,
.col-xl-8 {
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px
}

.card {
    box-shadow: 0 1px 1px rgba(0, 0, 0, .1)
}

.card {
    margin-bottom: 1.875rem;
    border: none;
    border-radius: 0;
    box-shadow: 0 10px 40px 0 rgba(62, 57, 107, .07), 0 2px 9px 0 rgba(62, 57, 107, .06);
    margin-left: 300px;
    margin-right: 300px;
}

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0, 0, 0, .06)
}

*,
:after,
:before {
    box-sizing: border-box
}

.card-body {
    flex: 1 1 auto;
    min-height: 1px;
    padding: 1.5rem
}

form {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
    font-size: 18px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

input[type="submit"] {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
}

.card .card-title {
    font-weight: 700;
    color: #5a5a5a;
    outline: 0
}

.card .card-title {
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: .05rem;
    font-size: 1.12rem
}

.card-title {
    margin-bottom: 1.5rem
}

.mb-1,
.my-1 {
    margin-bottom: 1rem !important
}

.col-md-4 {
    flex: 0 0 33.3333333333%;
    max-width: 33.3333333333%
}

.input1 {
    display: none;
}

.form1 {
    margin: 0 auto;
    /* display: inline-block; */
    float: left;
    padding: 5px;
}

.bc {
    float: left;
    padding: 20px 0;
    margin: 0 auto;
    font-weight: 700;
    font-size: 20px;

}

.custom-upload-btn1 {
    height: auto;
    background-color: #f2f2f2;
    padding: 30px 85px;
    border-radius: 5px;
    cursor: pointer;
    display: inline-block;
    background-image: url(../images/3.png);
    background-size: cover;
    color: #fff;

}

.custom-upload-btn2 {
    height: auto;
    width: 10px;
    padding: 30px 25px;
    border-radius: 5px;
    background-color: #f2f2f2;


    cursor: pointer;
    display: inline-block;
    background-image: url(../images/1.png);
    background-size: cover;
    color: #ffffff;

}


.container1 {
    height: 60px;
    width: 380px;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
}

.wtfk {
    padding: 30px 30px;
    background-color: #ffffff;
    margin: 50px 100px;
}

.white {
    background-color: #ffffff;
    width: 60%;
    margin: 30px auto;
    padding: 40px auto;
}

.box {
    margin-top: 50px;
}

.button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 4px;
}

.Button {
    margin: 40px auto;
}


.card .card-title {
    font-weight: 700;
    color: #5a5a5a;
    outline: 0
}

.card .card-title {
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: .05rem;
    font-size: 1.12rem
}

.card-title {
    margin-bottom: 1.5rem
}

.h2,
.h3,
.h4,
.h5,
.h6,
h1,
h2,
h3,
h4,
h5,
h6 {
    margin-bottom: .5rem;
    font-family: Open Sans, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica Neue, Arial, sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: inherit
}

h2,
h3,
h4,
h5,
h6 {
    margin-top: 0;
    margin-bottom: .5rem
}

.mb-3,
.my-3 {
    margin-bottom: 3rem !important
}

hr {
    margin-top: 1rem;
    margin-bottom: 1rem;
    border: 0;
    border-top: 1px solid rgba(0, 0, 0, .1)
}

hr {
    box-sizing: content-box;
    height: 0;
    overflow: visible
}

button,
input {
    overflow: visible
}

button,
input,
select,
textarea {
    margin: 0;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit
}

.col-md-4 {
    flex: 0 0 33.3333333333%;
    max-width: 33.3333333333%
}

.form-group {
    margin-bottom: 1rem
}

form .form-group {
    margin-bottom: 1.5rem
}

form label {
    color: #474747
}

label {
    display: inline-block;
    margin-bottom: .5rem
}

.position-relative {
    position: relative !important
}

fieldset {
    min-width: 0;
    padding: 0;
    margin: 0;
    border: 0
}

.position-relative .form-control {
    padding-right: calc(1.45em + 1.1rem + 2px)
}

.has-icon-left .form-control {
    padding-left: 2.5rem
}

.has-icon-left .form-control {
    padding-right: .9rem;
    padding-left: calc(1.45em + 1.1rem + 2px)
}

form .form-control {
    border: 1px solid #dadada;
    color: #606060
}

.form-control {
    display: block;
    width: 100%;
    height: calc(1.45em + 1.1rem + 2px);
    padding: .55rem .9rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.45;
    color: #1e1e1e;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #dadada;
    border-radius: .25rem;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out
}

.has-icon-left .form-control-position {
    right: auto;
    left: inherit
}

form .form-control-position {
    color: #5a5a5a
}

.form-control-position {
    position: absolute;
    top: 4px;
    right: 0;
    z-index: 2;
    display: block;
    width: 2.5rem;
    height: 2.5rem;
    line-height: 2.5rem;
    text-align: center
}

.fa,
.fab,
.fas {
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    display: inline-block;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    line-height: 1
}

/* .fa,.fas {
    font-family: Font Awesome\ 5 Pro;
    font-weight: 900
} */

.fa-user:before {
    content: "\f007"
}

.custom-control {
    display: block
}

.custom-control {
    position: relative;
    z-index: 1;
    min-height: 1.45rem;
    padding-left: 1.5rem;
    /* -webkit-print-color-adjust: exact;
    color-adjust: exact； */
}

input[type=checkbox],
input[type=radio] {
    box-sizing: border-box;
    padding: 0
}

/* .custom-control-input {
    position: absolute;
    left: 0;
    z-index: -1;
    width: 1rem;
    height: 1.225rem;
    opacity: 0
} */

form .custom-control-indicator {
    width: 1.1rem;
    height: 1.075rem;
    line-height: 1.05rem;
    top: .2rem;
    left: 0
}

.custom-control-indicator {
    width: 1.1rem;
    height: 1.075rem;
    line-height: 1.05rem;
    top: .2rem
}

.custom-control-label {
    position: relative;
    margin-bottom: 0;
    vertical-align: top
}

form .form-actions.right {
    text-align: right
}

form .form-actions {
    border-top: 1px solid #e0e0e0;
    padding: 20px 0;
    margin-top: 20px
}

.btn:not(:disabled):not(.disabled) {
    cursor: pointer
}

.btn-link {
    font-weight: 400;
    color: #b53836;
    text-decoration: none
}

.btn {
    display: inline-block;
    font-weight: 400;
    color: #202020;
    text-align: center;
    vertical-align: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: transparent;
    border: 1px solid transparent;
    padding: .55rem .9rem;
    font-size: 1rem;
    line-height: 1.45;
    border-radius: .25rem;
    transition: background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out
}

.btn-primary {
    color: #fff;
    background-color: #b53836;
    border-color: #b53836
}

.mr-1,
.mx-1 {
    margin-right: 1rem !important
}

.fa-sign-in:before {
    content: "\f090"
}

.login {
    padding-left: 20px;
    /* 调整左侧留给图标的空间 */
    background-image: url(../images/login.png);
    background-repeat: no-repeat;
    background-position: 10px center;
    background-size: 30px;
    /* 调整图标的尺寸 */
}



.shouye {
    padding: 10px 10px;
    background-color: #ffffff;
    margin: 50px 10px;
    display: flex;
}

.article p {
    text-indent: 2em;
}

.article {
    flex: 1;
    padding: 20px;
    background-color: #f9f9f9;
    margin: auto;
}

.image {
    flex: 1;
    padding: 10px;
    background-color: #ffffff;
}

.image-caption {
    text-align: center;
}

.image1 {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}
.dibuxiushi-tu1 {
    background-image: url(../images/盾.jpeg);
    background-repeat: no-repeat;
    height: 100px;
    float: left;
    width: 50%;


}

.dibuxiushi-tu2 {
    background-image: url(../images/齿轮.jpg);
    background-repeat: no-repeat;
    height: 100px;
    display: inline-block;
    width: 50%;


}

.dibuxiushi-zi1 {
    padding-left: 115px;
}

.dibuxiushi-zi2 {
    padding-left: 115px;
}

.P {
    font-size: small;
}

.dibu {
    background-color: #f6f6f6;
    padding: 12px 25px;
    /* margin: 0 18%; */
    /* border-radius: 6px; */
}

.bodyzi {
    background-color: #f6f6f6;
}

.yinpi1 {

    float: left;
    width: 50%;
}

.yinpi2 {
    float: left;
    width: 40%;
    margin-left: 10%;
}

.yinpi {
    width: 80%;
}

.box {
    margin: 20px 15%;
    max-width: none;
}

.Button {
    display: inline-block;
    width: 100%;
    padding: 0 43%;
    margin-bottom: 0;
}

H5 {
    float: left;
    margin-top: 20px;
    width: 100%;
}
.yin{
    margin-top: 50px;
    padding-left: 15%;
    border-radius: 5px;
    border-color: #171515;
    border: 1px solid;
}
.H2{
    margin: 0 0;
}
.buc{
    width: 60%;
    margin: 0 auto;
}
.buc1{
    display: inline-block;
}
.buc2{
    
    margin: 5px 0;
    
}
.buc3{
    color: #b5385b;
    text-decoration: none;
    font-size: small;
}
.buc4{
    float: right
}
.buc5{
    color: #a5a5a5;
    margin: 0;
}

.container1 {
    height: 60px;
    width: 380px;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
}

.t-p{
    width: 225px;
    height: auto;
    margin: 5px;
    border-radius: 50%;
}
.PP1{
    display: block;
    font-size: x-large;
    margin-top: 5px;
    margin-bottom: 15px;
}

.s1{
    float:left;
    width: 50%;
}
.s2{
    float:left;
    width: 50%;
    margin-bottom: 20px;
}
.s-p{
    width: 125px;
    margin: 3px;
}
.gy{
    padding: 20px;
}
.t-a{
display: inline-block; 
  overflow: hidden; 
  transition: transform 0.3s ease; 
}
.t-a image{
    width: 100%;
  height: auto;
}
.t-a:hover{
    transform: scale(0.9);
}
.di{
    display: inline-block;
    width: 30%;
}
.s-p{
    border-radius: 50%;
}
.tp{
    width:65%;
    margin-top: 0;
    padding-right:11% ;
    float: right;
}    
.t{
    border: 1px solid black;
    border-radius: 10px;
    padding-left: 3%;
    padding-top: 2.5%;
}
.sp{
width: 65%;
    float: right;
}
.PP2{
    margin: 30px 0;
}

.qq {
    position: absolute;
    right: 100px;
    margin-left: -50px;
    width: 200px;
}